67.11% is the change from 301 to 503
Calculation steps:
[( 503 - 301 ) ÷ 301] x 100 = 67.11%
Formula
Percentage change = [(503 - 301) / 301] x 100
Subtract the new number by the original number
503 - 301 = 202
202 ÷ 301 = 0.6710963455149501
0.6710963455149501 x 100 = 67.11%